Kilocalories to Watt-Hours Conversion (kcal to Wh)

Kilocalories to Watt-Hours Converter

Enter the energy in kilocalories below to convert it to watt-hours.

Result in Watt-Hours:

1 kcal = 1.162222 Wh

How to Convert Kilocalories to Watt-Hours

To convert a measurement in kilocalories to a measurement in watt-hours, multiply the energy by the following conversion ratio: 1.162222 watt-hours/kilocalorie.

Since one kilocalorie is equal to 1.162222 watt-hours, you can use this simple formula to convert:

watt-hours = kilocalories × 1.162222

The energy in watt-hours is equal to the energy in kilocalories multiplied by 1.162222.

For example, here's how to convert 5 kilocalories to watt-hours using the formula above.

watt-hours = (5 kcal × 1.162222) = 5.811111 Wh

How Many Watt-Hours Are in a Kilocalorie?

There are 1.162222 watt-hours in a kilocalorie, which is why we use this value in the formula above.

1 kcal = 1.162222 Wh

Kilocalories and watt-hours are both units used to measure energy. Keep reading to learn more about each unit of measure.

What Is a Kilocalorie?

One kilocalorie, is equal to the heat needed to raise the temperature of one kilogram of water from 14.5 to 15.5 degrees Celsius.

Kilocalories can be abbreviated as kcal; for example, 1 kilocalorie can be written as 1 kcal.

When being used to measure nutrition or metabolic processes, the large calorie is used, which is equal to one kilocalorie.

Learn more about kilocalories.

What Is a Watt-Hour?

The watt-hour is a measure of electrical energy equal to one watt of power over a one hour period.

Watt-hours are usually abbreviated as Wh, although the formally adopted expression is W·h. The abbreviation W h is also sometimes used. For example, 1 watt-hour can be written as 1 Wh, 1 W·h, or 1 W h.

In formal expressions, the centered dot (·) or space is used to separate units used to indicate multiplication in an expression and to avoid conflicting prefixes being misinterpreted as a unit symbol.^[1]

Learn more about watt-hours.

Kilocalorie to Watt-Hour Conversion Table

Table showing various kilocalorie measurements converted to watt-hours.
Kilocalories	Watt-hours
1 kcal	1.1622 Wh
2 kcal	2.3244 Wh
3 kcal	3.4867 Wh
4 kcal	4.6489 Wh
5 kcal	5.8111 Wh
6 kcal	6.9733 Wh
7 kcal	8.1356 Wh
8 kcal	9.2978 Wh
9 kcal	10.46 Wh
10 kcal	11.62 Wh
11 kcal	12.78 Wh
12 kcal	13.95 Wh
13 kcal	15.11 Wh
14 kcal	16.27 Wh
15 kcal	17.43 Wh
16 kcal	18.6 Wh
17 kcal	19.76 Wh
18 kcal	20.92 Wh
19 kcal	22.08 Wh
20 kcal	23.24 Wh
21 kcal	24.41 Wh
22 kcal	25.57 Wh
23 kcal	26.73 Wh
24 kcal	27.89 Wh
25 kcal	29.06 Wh
26 kcal	30.22 Wh
27 kcal	31.38 Wh
28 kcal	32.54 Wh
29 kcal	33.7 Wh
30 kcal	34.87 Wh
31 kcal	36.03 Wh
32 kcal	37.19 Wh
33 kcal	38.35 Wh
34 kcal	39.52 Wh
35 kcal	40.68 Wh
36 kcal	41.84 Wh
37 kcal	43 Wh
38 kcal	44.16 Wh
39 kcal	45.33 Wh
40 kcal	46.49 Wh

Table showing various kilocalorie measurements converted to watt-hours.

Kilocalories

Watt-hours

1 kcal

1.1622 Wh

2 kcal

2.3244 Wh

3 kcal

3.4867 Wh

4 kcal

4.6489 Wh

5 kcal

5.8111 Wh

6 kcal

6.9733 Wh

7 kcal

8.1356 Wh

8 kcal

9.2978 Wh

9 kcal

10.46 Wh

10 kcal

11.62 Wh

11 kcal

12.78 Wh

12 kcal

13.95 Wh

13 kcal

15.11 Wh

14 kcal

16.27 Wh

15 kcal

17.43 Wh

16 kcal

18.6 Wh

17 kcal

19.76 Wh

18 kcal

20.92 Wh

19 kcal

22.08 Wh

20 kcal

23.24 Wh

21 kcal

24.41 Wh

22 kcal

25.57 Wh

23 kcal

26.73 Wh

24 kcal

27.89 Wh

25 kcal

29.06 Wh

26 kcal

30.22 Wh

27 kcal

31.38 Wh

28 kcal

32.54 Wh

29 kcal

33.7 Wh

30 kcal

34.87 Wh

31 kcal

36.03 Wh

32 kcal

37.19 Wh

33 kcal

38.35 Wh

34 kcal

39.52 Wh

35 kcal

40.68 Wh

36 kcal

41.84 Wh

37 kcal

43 Wh

38 kcal

44.16 Wh

39 kcal

45.33 Wh

40 kcal

46.49 Wh

References

Bureau International des Poids et Mesures, The International System of Units (SI), 9th edition, 2019, https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf